985034021 has 4 divisors (see below), whose sum is σ = 1016809344. Its totient is φ = 953258700.

The previous prime is 985033997. The next prime is 985034047. The reversal of 985034021 is 120430589.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 985034021 - 2¹⁸ = 984771877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (985034051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15887615 + ... + 15887676.

It is an arithmetic number, because the mean of its divisors is an integer number (254202336).

Almost surely, 2^985034021 is an apocalyptic number.

It is an amenable number.

985034021 is a deficient number, since it is larger than the sum of its proper divisors (31775323).

985034021 is a wasteful number, since it uses less digits than its factorization.

985034021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31775322.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 985034021 is about 31385.2516478680. The cubic root of 985034021 is about 994.9862446016.

The spelling of 985034021 in words is "nine hundred eighty-five million, thirty-four thousand, twenty-one".